The Rolls-Royce Griffon is a British 37-litre (2,240 cu in) capacity, 60-degree V-12, liquid-cooled aero engine designed and built by Rolls-Royce Limited. This engine replaced the Rolls Royce Merlin in the later version of the Spitfire.

This particular Mk with conta rotating props was fitted to the Avro Shackleton an off shoot of the the Lancaster
Griffon engines can still be heard in the sky as the BBMF have 2 MK 19 PR spitfies which are fitted with the single 5 bladed prop as seen in this photo